Example directly from my CSS file:
@import 'https://fonts.googleapis.com/css?family=Lato:700';
@import url('https://fonts.googleapis.com/css?family=Montserrat:700');
I purchased a beautiful theme for my WordPress site and some of the CSS fonts are imported like that. I am combining all these, and I'm just not sure of the difference.
I did some research and notice that Mozilla also flips between the 2 in their examples.